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<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Copyright (C) 2009 The Guava Authors<a name="line.2"></a>
<span class="sourceLineNo">003</span> *<a name="line.3"></a>
<span class="sourceLineNo">004</span> * Licensed under the Apache License, Version 2.0 (the "License");<a name="line.4"></a>
<span class="sourceLineNo">005</span> * you may not use this file except in compliance with the License.<a name="line.5"></a>
<span class="sourceLineNo">006</span> * You may obtain a copy of the License at<a name="line.6"></a>
<span class="sourceLineNo">007</span> *<a name="line.7"></a>
<span class="sourceLineNo">008</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.8"></a>
<span class="sourceLineNo">009</span> *<a name="line.9"></a>
<span class="sourceLineNo">010</span> * Unless required by applicable law or agreed to in writing, software<a name="line.10"></a>
<span class="sourceLineNo">011</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.11"></a>
<span class="sourceLineNo">012</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.12"></a>
<span class="sourceLineNo">013</span> * See the License for the specific language governing permissions and<a name="line.13"></a>
<span class="sourceLineNo">014</span> * limitations under the License.<a name="line.14"></a>
<span class="sourceLineNo">015</span> */<a name="line.15"></a>
<span class="sourceLineNo">016</span><a name="line.16"></a>
<span class="sourceLineNo">017</span>package com.google.common.collect;<a name="line.17"></a>
<span class="sourceLineNo">018</span><a name="line.18"></a>
<span class="sourceLineNo">019</span>import static com.google.common.base.Preconditions.checkNotNull;<a name="line.19"></a>
<span class="sourceLineNo">020</span><a name="line.20"></a>
<span class="sourceLineNo">021</span>import com.google.common.annotations.GwtCompatible;<a name="line.21"></a>
<span class="sourceLineNo">022</span><a name="line.22"></a>
<span class="sourceLineNo">023</span>import java.util.Comparator;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import java.util.List;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.util.Map;<a name="line.25"></a>
<span class="sourceLineNo">026</span><a name="line.26"></a>
<span class="sourceLineNo">027</span>import javax.annotation.Nullable;<a name="line.27"></a>
<span class="sourceLineNo">028</span><a name="line.28"></a>
<span class="sourceLineNo">029</span>/**<a name="line.29"></a>
<span class="sourceLineNo">030</span> * An immutable {@link Table} with reliable user-specified iteration order.<a name="line.30"></a>
<span class="sourceLineNo">031</span> * Does not permit null keys or values.<a name="line.31"></a>
<span class="sourceLineNo">032</span> *<a name="line.32"></a>
<span class="sourceLineNo">033</span> * &lt;p&gt;&lt;b&gt;Note&lt;/b&gt;: Although this class is not final, it cannot be subclassed as<a name="line.33"></a>
<span class="sourceLineNo">034</span> * it has no public or protected constructors. Thus, instances of this class are<a name="line.34"></a>
<span class="sourceLineNo">035</span> * guaranteed to be immutable.<a name="line.35"></a>
<span class="sourceLineNo">036</span> *<a name="line.36"></a>
<span class="sourceLineNo">037</span> * &lt;p&gt;See the Guava User Guide article on &lt;a href=<a name="line.37"></a>
<span class="sourceLineNo">038</span> * "http://code.google.com/p/guava-libraries/wiki/ImmutableCollectionsExplained"&gt;<a name="line.38"></a>
<span class="sourceLineNo">039</span> * immutable collections&lt;/a&gt;.<a name="line.39"></a>
<span class="sourceLineNo">040</span> *<a name="line.40"></a>
<span class="sourceLineNo">041</span> * @author Gregory Kick<a name="line.41"></a>
<span class="sourceLineNo">042</span> * @since 11.0<a name="line.42"></a>
<span class="sourceLineNo">043</span> */<a name="line.43"></a>
<span class="sourceLineNo">044</span>@GwtCompatible<a name="line.44"></a>
<span class="sourceLineNo">045</span>// TODO(gak): make serializable<a name="line.45"></a>
<span class="sourceLineNo">046</span>public abstract class ImmutableTable&lt;R, C, V&gt; implements Table&lt;R, C, V&gt; {<a name="line.46"></a>
<span class="sourceLineNo">047</span>  /** Returns an empty immutable table. */<a name="line.47"></a>
<span class="sourceLineNo">048</span>  @SuppressWarnings("unchecked")<a name="line.48"></a>
<span class="sourceLineNo">049</span>  public static final &lt;R, C, V&gt; ImmutableTable&lt;R, C, V&gt; of() {<a name="line.49"></a>
<span class="sourceLineNo">050</span>    return (ImmutableTable&lt;R, C, V&gt;) EmptyImmutableTable.INSTANCE;<a name="line.50"></a>
<span class="sourceLineNo">051</span>  }<a name="line.51"></a>
<span class="sourceLineNo">052</span><a name="line.52"></a>
<span class="sourceLineNo">053</span>  /** Returns an immutable table containing a single cell. */<a name="line.53"></a>
<span class="sourceLineNo">054</span>  public static final &lt;R, C, V&gt; ImmutableTable&lt;R, C, V&gt; of(R rowKey,<a name="line.54"></a>
<span class="sourceLineNo">055</span>      C columnKey, V value) {<a name="line.55"></a>
<span class="sourceLineNo">056</span>    return new SingletonImmutableTable&lt;R, C, V&gt;(rowKey, columnKey, value);<a name="line.56"></a>
<span class="sourceLineNo">057</span>  }<a name="line.57"></a>
<span class="sourceLineNo">058</span><a name="line.58"></a>
<span class="sourceLineNo">059</span>  /**<a name="line.59"></a>
<span class="sourceLineNo">060</span>   * Returns an immutable copy of the provided table.<a name="line.60"></a>
<span class="sourceLineNo">061</span>   *<a name="line.61"></a>
<span class="sourceLineNo">062</span>   * &lt;p&gt;The {@link Table#cellSet()} iteration order of the provided table<a name="line.62"></a>
<span class="sourceLineNo">063</span>   * determines the iteration ordering of all views in the returned table. Note<a name="line.63"></a>
<span class="sourceLineNo">064</span>   * that some views of the original table and the copied table may have<a name="line.64"></a>
<span class="sourceLineNo">065</span>   * different iteration orders. For more control over the ordering, create a<a name="line.65"></a>
<span class="sourceLineNo">066</span>   * {@link Builder} and call {@link Builder#orderRowsBy},<a name="line.66"></a>
<span class="sourceLineNo">067</span>   * {@link Builder#orderColumnsBy}, and {@link Builder#putAll}<a name="line.67"></a>
<span class="sourceLineNo">068</span>   *<a name="line.68"></a>
<span class="sourceLineNo">069</span>   * &lt;p&gt;Despite the method name, this method attempts to avoid actually copying<a name="line.69"></a>
<span class="sourceLineNo">070</span>   * the data when it is safe to do so. The exact circumstances under which a<a name="line.70"></a>
<span class="sourceLineNo">071</span>   * copy will or will not be performed are undocumented and subject to change.<a name="line.71"></a>
<span class="sourceLineNo">072</span>   */<a name="line.72"></a>
<span class="sourceLineNo">073</span>  public static final &lt;R, C, V&gt; ImmutableTable&lt;R, C, V&gt; copyOf(<a name="line.73"></a>
<span class="sourceLineNo">074</span>      Table&lt;? extends R, ? extends C, ? extends V&gt; table) {<a name="line.74"></a>
<span class="sourceLineNo">075</span>    if (table instanceof ImmutableTable) {<a name="line.75"></a>
<span class="sourceLineNo">076</span>      @SuppressWarnings("unchecked")<a name="line.76"></a>
<span class="sourceLineNo">077</span>      ImmutableTable&lt;R, C, V&gt; parameterizedTable<a name="line.77"></a>
<span class="sourceLineNo">078</span>          = (ImmutableTable&lt;R, C, V&gt;) table;<a name="line.78"></a>
<span class="sourceLineNo">079</span>      return parameterizedTable;<a name="line.79"></a>
<span class="sourceLineNo">080</span>    } else {<a name="line.80"></a>
<span class="sourceLineNo">081</span>      int size = table.size();<a name="line.81"></a>
<span class="sourceLineNo">082</span>      switch (size) {<a name="line.82"></a>
<span class="sourceLineNo">083</span>        case 0:<a name="line.83"></a>
<span class="sourceLineNo">084</span>          return of();<a name="line.84"></a>
<span class="sourceLineNo">085</span>        case 1:<a name="line.85"></a>
<span class="sourceLineNo">086</span>          Cell&lt;? extends R, ? extends C, ? extends V&gt; onlyCell<a name="line.86"></a>
<span class="sourceLineNo">087</span>              = Iterables.getOnlyElement(table.cellSet());<a name="line.87"></a>
<span class="sourceLineNo">088</span>          return ImmutableTable.&lt;R, C, V&gt;of(onlyCell.getRowKey(),<a name="line.88"></a>
<span class="sourceLineNo">089</span>              onlyCell.getColumnKey(), onlyCell.getValue());<a name="line.89"></a>
<span class="sourceLineNo">090</span>        default:<a name="line.90"></a>
<span class="sourceLineNo">091</span>          ImmutableSet.Builder&lt;Cell&lt;R, C, V&gt;&gt; cellSetBuilder<a name="line.91"></a>
<span class="sourceLineNo">092</span>              = ImmutableSet.builder();<a name="line.92"></a>
<span class="sourceLineNo">093</span>          for (Cell&lt;? extends R, ? extends C, ? extends V&gt; cell :<a name="line.93"></a>
<span class="sourceLineNo">094</span>              table.cellSet()) {<a name="line.94"></a>
<span class="sourceLineNo">095</span>            /*<a name="line.95"></a>
<span class="sourceLineNo">096</span>             * Must cast to be able to create a Cell&lt;R, C, V&gt; rather than a<a name="line.96"></a>
<span class="sourceLineNo">097</span>             * Cell&lt;? extends R, ? extends C, ? extends V&gt;<a name="line.97"></a>
<span class="sourceLineNo">098</span>             */<a name="line.98"></a>
<span class="sourceLineNo">099</span>            cellSetBuilder.add(cellOf((R) cell.getRowKey(),<a name="line.99"></a>
<span class="sourceLineNo">100</span>                (C) cell.getColumnKey(), (V) cell.getValue()));<a name="line.100"></a>
<span class="sourceLineNo">101</span>          }<a name="line.101"></a>
<span class="sourceLineNo">102</span>          return RegularImmutableTable.forCells(cellSetBuilder.build());<a name="line.102"></a>
<span class="sourceLineNo">103</span>      }<a name="line.103"></a>
<span class="sourceLineNo">104</span>    }<a name="line.104"></a>
<span class="sourceLineNo">105</span>  }<a name="line.105"></a>
<span class="sourceLineNo">106</span><a name="line.106"></a>
<span class="sourceLineNo">107</span>  /**<a name="line.107"></a>
<span class="sourceLineNo">108</span>   * Returns a new builder. The generated builder is equivalent to the builder<a name="line.108"></a>
<span class="sourceLineNo">109</span>   * created by the {@link Builder#ImmutableTable.Builder()} constructor.<a name="line.109"></a>
<span class="sourceLineNo">110</span>   */<a name="line.110"></a>
<span class="sourceLineNo">111</span>  public static final &lt;R, C, V&gt; Builder&lt;R, C, V&gt; builder() {<a name="line.111"></a>
<span class="sourceLineNo">112</span>    return new Builder&lt;R, C, V&gt;();<a name="line.112"></a>
<span class="sourceLineNo">113</span>  }<a name="line.113"></a>
<span class="sourceLineNo">114</span><a name="line.114"></a>
<span class="sourceLineNo">115</span>  /**<a name="line.115"></a>
<span class="sourceLineNo">116</span>   * Verifies that {@code rowKey}, {@code columnKey} and {@code value} are<a name="line.116"></a>
<span class="sourceLineNo">117</span>   * non-null, and returns a new entry with those values.<a name="line.117"></a>
<span class="sourceLineNo">118</span>   */<a name="line.118"></a>
<span class="sourceLineNo">119</span>  static &lt;R, C, V&gt; Cell&lt;R, C, V&gt; cellOf(R rowKey, C columnKey, V value) {<a name="line.119"></a>
<span class="sourceLineNo">120</span>    return Tables.immutableCell(checkNotNull(rowKey), checkNotNull(columnKey),<a name="line.120"></a>
<span class="sourceLineNo">121</span>        checkNotNull(value));<a name="line.121"></a>
<span class="sourceLineNo">122</span>  }<a name="line.122"></a>
<span class="sourceLineNo">123</span><a name="line.123"></a>
<span class="sourceLineNo">124</span>  /**<a name="line.124"></a>
<span class="sourceLineNo">125</span>   * A builder for creating immutable table instances, especially {@code public<a name="line.125"></a>
<span class="sourceLineNo">126</span>   * static final} tables ("constant tables"). Example: &lt;pre&gt;   {@code<a name="line.126"></a>
<span class="sourceLineNo">127</span>   *<a name="line.127"></a>
<span class="sourceLineNo">128</span>   *   static final ImmutableTable&lt;Integer, Character, String&gt; SPREADSHEET =<a name="line.128"></a>
<span class="sourceLineNo">129</span>   *       new ImmutableTable.Builder&lt;Integer, Character, String&gt;()<a name="line.129"></a>
<span class="sourceLineNo">130</span>   *           .put(1, 'A', "foo")<a name="line.130"></a>
<span class="sourceLineNo">131</span>   *           .put(1, 'B', "bar")<a name="line.131"></a>
<span class="sourceLineNo">132</span>   *           .put(2, 'A', "baz")<a name="line.132"></a>
<span class="sourceLineNo">133</span>   *           .build();}&lt;/pre&gt;<a name="line.133"></a>
<span class="sourceLineNo">134</span>   *<a name="line.134"></a>
<span class="sourceLineNo">135</span>   * &lt;p&gt;By default, the order in which cells are added to the builder determines<a name="line.135"></a>
<span class="sourceLineNo">136</span>   * the iteration ordering of all views in the returned table, with {@link<a name="line.136"></a>
<span class="sourceLineNo">137</span>   * #putAll} following the {@link Table#cellSet()} iteration order. However, if<a name="line.137"></a>
<span class="sourceLineNo">138</span>   * {@link #orderRowsBy} or {@link #orderColumnsBy} is called, the views are<a name="line.138"></a>
<span class="sourceLineNo">139</span>   * sorted by the supplied comparators.<a name="line.139"></a>
<span class="sourceLineNo">140</span>   *<a name="line.140"></a>
<span class="sourceLineNo">141</span>   * For empty or single-cell immutable tables, {@link #of()} and<a name="line.141"></a>
<span class="sourceLineNo">142</span>   * {@link #of(Object, Object, Object)} are even more convenient.<a name="line.142"></a>
<span class="sourceLineNo">143</span>   *<a name="line.143"></a>
<span class="sourceLineNo">144</span>   * &lt;p&gt;Builder instances can be reused - it is safe to call {@link #build}<a name="line.144"></a>
<span class="sourceLineNo">145</span>   * multiple times to build multiple tables in series. Each table is a superset<a name="line.145"></a>
<span class="sourceLineNo">146</span>   * of the tables created before it.<a name="line.146"></a>
<span class="sourceLineNo">147</span>   *<a name="line.147"></a>
<span class="sourceLineNo">148</span>   * @since 11.0<a name="line.148"></a>
<span class="sourceLineNo">149</span>   */<a name="line.149"></a>
<span class="sourceLineNo">150</span>  public static final class Builder&lt;R, C, V&gt; {<a name="line.150"></a>
<span class="sourceLineNo">151</span>    private final List&lt;Cell&lt;R, C, V&gt;&gt; cells = Lists.newArrayList();<a name="line.151"></a>
<span class="sourceLineNo">152</span>    private Comparator&lt;? super R&gt; rowComparator;<a name="line.152"></a>
<span class="sourceLineNo">153</span>    private Comparator&lt;? super C&gt; columnComparator;<a name="line.153"></a>
<span class="sourceLineNo">154</span><a name="line.154"></a>
<span class="sourceLineNo">155</span>    /**<a name="line.155"></a>
<span class="sourceLineNo">156</span>     * Creates a new builder. The returned builder is equivalent to the builder<a name="line.156"></a>
<span class="sourceLineNo">157</span>     * generated by {@link ImmutableTable#builder}.<a name="line.157"></a>
<span class="sourceLineNo">158</span>     */<a name="line.158"></a>
<span class="sourceLineNo">159</span>    public Builder() {}<a name="line.159"></a>
<span class="sourceLineNo">160</span><a name="line.160"></a>
<span class="sourceLineNo">161</span>    /**<a name="line.161"></a>
<span class="sourceLineNo">162</span>     * Specifies the ordering of the generated table's rows.<a name="line.162"></a>
<span class="sourceLineNo">163</span>     */<a name="line.163"></a>
<span class="sourceLineNo">164</span>    public Builder&lt;R, C, V&gt; orderRowsBy(Comparator&lt;? super R&gt; rowComparator) {<a name="line.164"></a>
<span class="sourceLineNo">165</span>      this.rowComparator = checkNotNull(rowComparator);<a name="line.165"></a>
<span class="sourceLineNo">166</span>      return this;<a name="line.166"></a>
<span class="sourceLineNo">167</span>    }<a name="line.167"></a>
<span class="sourceLineNo">168</span><a name="line.168"></a>
<span class="sourceLineNo">169</span>    /**<a name="line.169"></a>
<span class="sourceLineNo">170</span>     * Specifies the ordering of the generated table's columns.<a name="line.170"></a>
<span class="sourceLineNo">171</span>     */<a name="line.171"></a>
<span class="sourceLineNo">172</span>    public Builder&lt;R, C, V&gt; orderColumnsBy(<a name="line.172"></a>
<span class="sourceLineNo">173</span>        Comparator&lt;? super C&gt; columnComparator) {<a name="line.173"></a>
<span class="sourceLineNo">174</span>      this.columnComparator = checkNotNull(columnComparator);<a name="line.174"></a>
<span class="sourceLineNo">175</span>      return this;<a name="line.175"></a>
<span class="sourceLineNo">176</span>    }<a name="line.176"></a>
<span class="sourceLineNo">177</span><a name="line.177"></a>
<span class="sourceLineNo">178</span>    /**<a name="line.178"></a>
<span class="sourceLineNo">179</span>     * Associates the ({@code rowKey}, {@code columnKey}) pair with {@code<a name="line.179"></a>
<span class="sourceLineNo">180</span>     * value} in the built table. Duplicate key pairs are not allowed and will<a name="line.180"></a>
<span class="sourceLineNo">181</span>     * cause {@link #build} to fail.<a name="line.181"></a>
<span class="sourceLineNo">182</span>     */<a name="line.182"></a>
<span class="sourceLineNo">183</span>    public Builder&lt;R, C, V&gt; put(R rowKey, C columnKey, V value) {<a name="line.183"></a>
<span class="sourceLineNo">184</span>      cells.add(cellOf(rowKey, columnKey, value));<a name="line.184"></a>
<span class="sourceLineNo">185</span>      return this;<a name="line.185"></a>
<span class="sourceLineNo">186</span>    }<a name="line.186"></a>
<span class="sourceLineNo">187</span><a name="line.187"></a>
<span class="sourceLineNo">188</span>    /**<a name="line.188"></a>
<span class="sourceLineNo">189</span>     * Adds the given {@code cell} to the table, making it immutable if<a name="line.189"></a>
<span class="sourceLineNo">190</span>     * necessary. Duplicate key pairs are not allowed and will cause {@link<a name="line.190"></a>
<span class="sourceLineNo">191</span>     * #build} to fail.<a name="line.191"></a>
<span class="sourceLineNo">192</span>     */<a name="line.192"></a>
<span class="sourceLineNo">193</span>    public Builder&lt;R, C, V&gt; put(<a name="line.193"></a>
<span class="sourceLineNo">194</span>        Cell&lt;? extends R, ? extends C, ? extends V&gt; cell) {<a name="line.194"></a>
<span class="sourceLineNo">195</span>      if (cell instanceof Tables.ImmutableCell) {<a name="line.195"></a>
<span class="sourceLineNo">196</span>        checkNotNull(cell.getRowKey());<a name="line.196"></a>
<span class="sourceLineNo">197</span>        checkNotNull(cell.getColumnKey());<a name="line.197"></a>
<span class="sourceLineNo">198</span>        checkNotNull(cell.getValue());<a name="line.198"></a>
<span class="sourceLineNo">199</span>        @SuppressWarnings("unchecked") // all supported methods are covariant<a name="line.199"></a>
<span class="sourceLineNo">200</span>        Cell&lt;R, C, V&gt; immutableCell = (Cell&lt;R, C, V&gt;) cell;<a name="line.200"></a>
<span class="sourceLineNo">201</span>        cells.add(immutableCell);<a name="line.201"></a>
<span class="sourceLineNo">202</span>      } else {<a name="line.202"></a>
<span class="sourceLineNo">203</span>        put(cell.getRowKey(), cell.getColumnKey(), cell.getValue());<a name="line.203"></a>
<span class="sourceLineNo">204</span>      }<a name="line.204"></a>
<span class="sourceLineNo">205</span>      return this;<a name="line.205"></a>
<span class="sourceLineNo">206</span>    }<a name="line.206"></a>
<span class="sourceLineNo">207</span><a name="line.207"></a>
<span class="sourceLineNo">208</span>    /**<a name="line.208"></a>
<span class="sourceLineNo">209</span>     * Associates all of the given table's keys and values in the built table.<a name="line.209"></a>
<span class="sourceLineNo">210</span>     * Duplicate row key column key pairs are not allowed, and will cause<a name="line.210"></a>
<span class="sourceLineNo">211</span>     * {@link #build} to fail.<a name="line.211"></a>
<span class="sourceLineNo">212</span>     *<a name="line.212"></a>
<span class="sourceLineNo">213</span>     * @throws NullPointerException if any key or value in {@code table} is null<a name="line.213"></a>
<span class="sourceLineNo">214</span>     */<a name="line.214"></a>
<span class="sourceLineNo">215</span>    public Builder&lt;R, C, V&gt; putAll(<a name="line.215"></a>
<span class="sourceLineNo">216</span>        Table&lt;? extends R, ? extends C, ? extends V&gt; table) {<a name="line.216"></a>
<span class="sourceLineNo">217</span>      for (Cell&lt;? extends R, ? extends C, ? extends V&gt; cell : table.cellSet()) {<a name="line.217"></a>
<span class="sourceLineNo">218</span>        put(cell);<a name="line.218"></a>
<span class="sourceLineNo">219</span>      }<a name="line.219"></a>
<span class="sourceLineNo">220</span>      return this;<a name="line.220"></a>
<span class="sourceLineNo">221</span>    }<a name="line.221"></a>
<span class="sourceLineNo">222</span><a name="line.222"></a>
<span class="sourceLineNo">223</span>    /**<a name="line.223"></a>
<span class="sourceLineNo">224</span>     * Returns a newly-created immutable table.<a name="line.224"></a>
<span class="sourceLineNo">225</span>     *<a name="line.225"></a>
<span class="sourceLineNo">226</span>     * @throws IllegalArgumentException if duplicate key pairs were added<a name="line.226"></a>
<span class="sourceLineNo">227</span>     */<a name="line.227"></a>
<span class="sourceLineNo">228</span>    public ImmutableTable&lt;R, C, V&gt; build() {<a name="line.228"></a>
<span class="sourceLineNo">229</span>      int size = cells.size();<a name="line.229"></a>
<span class="sourceLineNo">230</span>      switch (size) {<a name="line.230"></a>
<span class="sourceLineNo">231</span>        case 0:<a name="line.231"></a>
<span class="sourceLineNo">232</span>          return of();<a name="line.232"></a>
<span class="sourceLineNo">233</span>        case 1:<a name="line.233"></a>
<span class="sourceLineNo">234</span>          return new SingletonImmutableTable&lt;R, C, V&gt;(<a name="line.234"></a>
<span class="sourceLineNo">235</span>              Iterables.getOnlyElement(cells));<a name="line.235"></a>
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<span class="sourceLineNo">338</span>    return rowMap().toString();<a name="line.338"></a>
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<span class="sourceLineNo">340</span>}<a name="line.340"></a>




























































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